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EP0598152A1 - Gehäuse - Google Patents

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Publication number
EP0598152A1
EP0598152A1 EP92310518A EP92310518A EP0598152A1 EP 0598152 A1 EP0598152 A1 EP 0598152A1 EP 92310518 A EP92310518 A EP 92310518A EP 92310518 A EP92310518 A EP 92310518A EP 0598152 A1 EP0598152 A1 EP 0598152A1
Authority
EP
European Patent Office
Prior art keywords
edges
portions
casing
parts
casing according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP92310518A
Other languages
English (en)
French (fr)
Inventor
David John Hollick
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
B&H Nottingham Ltd
Original Assignee
B&H Nottingham Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to GB9212853A priority Critical patent/GB2257850B/en
Priority claimed from GB9212853A external-priority patent/GB2257850B/en
Application filed by B&H Nottingham Ltd filed Critical B&H Nottingham Ltd
Priority to EP92310518A priority patent/EP0598152A1/de
Publication of EP0598152A1 publication Critical patent/EP0598152A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
    • H02G15/113—Boxes split longitudinally in main cable direction

Definitions

  • This invention relates to casings particularly, but not exclusively, for use in encasing electrical apparatus such as connections in power distribution systems.
  • casings for electrical connections in the form of a hollow plastics body in two components, wherein these components are initially produced side-by-side as an integral moulding. The structure is then reheated along a line between the two components and is folded to bring those components into mutual contact.
  • the resultant hollow body has the advantage that the two components can be flexed apart sufficiently to allow insertion of the electrical connection into the hollow, but thereafter are held together comparatively firmly. Thus, the need to hold the components together by other means (e.g. manually) is avoided, both during insertion of the electrical connection and in subsequent sealing of the casing.
  • Casings of this type do however suffer from the disadvantage that they are bulky for transportation between the point of manufacture and the point of use, and for storage prior to use. Even if transported or stored in the "unfolded" condition where several such items can be nested one within another, the area occupied by the casing is relatively large.
  • a casing comprising a hollow body formed in two parts, the parts having respective edges which are contiguous with one another when the parts are assembled together, and a connector element which extends at least partly along said edges and which receives said edges in a rebated recess therein, the assembly being such that the body parts can be flexed apart about said edges to enable the casing to be placed over an article to be encased, the edges having respective first portions which abut one another at least when the body parts are flexed apart to resist further flexing of the body parts, the edges also having respective second portions which prevent said edges from being withdrawn laterally from the rebated recess.
  • each said edge is formed on a generally planar flange on the respective body part, the first portions of the edges are in face-to-face abutment at least when the body parts are flexed as aforesaid, and the second portions of the edges extend out of the planes of the flanges, respectively.
  • the first portions may be coplanar with the flanges or may extend slightly out of the planes of the flanges either towards or away from each other.
  • a plurality of first and second portions are provided on each edge, and these preferably alternate along the length of that edge.
  • edges are also provided with third portions which prevent relative movement of the body portions longitudinally to the rebated recess.
  • the connector element is in the form of a split tube, for example of circular cross-section.
  • the illustrated casing comprises two components 10, 11 which are initially produced side-by-side as an integral plastics moulding.
  • the component 10 is composed of a hollow body part 12 surrounded by a planar flange 13, while the component 11 is similarly composed of a hollow body part 14 and a flange 15.
  • the components 10 and 11 are separated by cutting along a line 16: this produces respective edges 17 and 18 on the flanges 13 and 15, respectively.
  • the components are then placed together with the flanges 13, 15 in face-to-face relation (see Figure 3) so that the edges 17, 18 are contiguous with one another and the two body parts 12, 14 co-operate to form a recess 19.
  • This recess is destined to receive electrical apparatus such as a connection in a power distribution system.
  • a series of formations 20 are produced so as to straddle the line 16.
  • these formations are of inverted v-shape and, after cutting along the edge 16, form respective projections 21 on the edges 17, 18 which extend out of the plane of the respective flange 13, 15 at an angle of about 45°.
  • the formations 20 alternate along the line 16 with flats 22 which, after cutting, form projections 23 on the edges 17, 18 which are coplanar with the respective flanges 13, 15.
  • Each of the edges 17, 18 thus has angled and flat projections alternating along its length.
  • the angled projections 21 on edge 17 are aligned with the similar projections on edge 18, whilst the flat projections 23 on both edges are similarly aligned and are in face-to-face abutment.
  • a connector element 24 is then slid lengthwise along the edges 17, 18 so that the projections 21, 23 are received in a rebated recess 25 therein - see Figure 5, wherein the element 24 is shown partly cut-away.
  • the element 24 is in the form of a split tube of circular cross-section.
  • the inherent flexibility of the material from which they are made will allow the components 10, 11 to be flexed apart sufficiently to enable the casing to be placed over the electrical connection, with the connection being received within the recess 19.
  • the projections 23 will be urged into close contact, thereby resisting further flexing movement of the components 10, 11 and also tending to return those components to their closed condition.
  • the angled projections 21 prevent the edges 17, 18 disengaging from the connector element 24.
  • the space between the two components 10, 11 is filled with a cold curing compound for electrical insulation purposes.
  • a strip of sealing tape (not shown) can be provided between the edges 17, 18 to prevent leakage of the compound therefrom.
  • the other edges, for example flanges 13, 15, can also be sealed with tape.
  • Either spring steel clips or a U-shaped plastics or metal extrusion can be used to hold the components during curing of the compound.
  • the casing can be transported and/or stored after the components 10, 11 have been separated and before they are assembled into their final configuration and before the connector element 24 is engaged with the edges 17, 18, the latter operations being readily performed on-site.
  • the components 10, 11 can be nested one within the other, along with components of a number of other similar casings, thereby minimising their overall bulk.
  • locating means can be provided on the components 10, 11 to prevent relative longitudinal slippage therebetween.
  • this locating means can be in the form of one or more tabs on the edge 17 which locate in corresponding recesses in the edge 18, and/or vice versa.
  • raised dimples can be provided on the flange 13 which engage with complementary recesses or apertures in the flange 15, and/or vice versa.
  • the projections 23 have been described as being normally in face-to-face contact, i.e. even before the components 10, 11 are flexed to open up recess 19. However, it is possible that these projections 23 could be angled slightly so that they are normally out of contact with one another and brought into abutment only when the components 10, 11 have been flexed apart by a small amount. Conversely, the projections 23 can be angled in the reverse direction to provide a certain amount of pre-loading on the components 10, 11. It is also not necessary that the projections 21 and 23 on one flange are exactly aligned with their counterparts on the other flange: all that is necessary is that there is a degree of overlap between the respective projections 23.
  • the projections 21 can take many different forms other than that specifically described above, e.g. they could be part-circular in cross-sectional shape and/or could be formed by raised ribs.
  • the connector element 24 can similarly take many other forms, and could, for example, comprise a flat spine from whose edges a pair of integral arms extend at approximately the same angle as the projections 21. It is also possible for the connector element to extend only part way along the edges 17, 18 rather than along the whole length thereof as shown in the illustrated embodiment.
  • the distance between the body portions 12, 14 is not sufficient to create an adequate thickness of material in the region of the formations 20 and the flats 22.
  • the area between the body portions can take the form depicted in Figure 6, i.e. wherein the parts which ultimately form the projections 21, 23 are separated by respective land portions 26, 27. Two cuts are then made at either end of these portions, as indicated at 28, with the land portions 26, 27 ultimately being discarded.
  • a casing for an electrical connection comprises two identical body components 71,72 which are formed as plastics mouldings.
  • One component 71 is shown in Figure 7.
  • the component 71 comprises a hollow body part 74 surrounded by a planar flange 75.
  • the other component 72 comprises a hollow body part 76 and a flange 77.
  • the two components 71,72 are placed together with the flanges 75,77 in face-to-face relation so that the two body parts 74,76 form an enclosure.
  • a series of hollow hemicylindrical protrusions 81 which extend above the plane of the flange 75, and which alternate with a series of planar ramps 82 which extend below the plane of the flange 75.
  • the protrusions 81 prevent lateral withdrawal of the components 71,72 from the split tube 83. Also, the cooperation of the ramps 82 and the protrusions 81 prevent relative movement of the components 71,72 longitudinally to the tube 83. Further, the peripheral regions of the flanges 75,77 abut each other and limit the extent to which the components 71,72 can be flexed apart. However, the inherent flexibility of the material from which the components 71,72 are made does allow them to be flexed apart sufficiently (see Figure 12) for the casing to be fitted over an electrical connection, which is received within the enclosure formed between the body parts 74,76. When released, the resilience of the material then urges the components 71,72 to the closed position.
  • the casing After fitting, the casing is filled with a cold curing compound as previously described.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
EP92310518A 1991-07-13 1992-11-18 Gehäuse Withdrawn EP0598152A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9212853A GB2257850B (en) 1991-07-13 1992-06-17 Casings
EP92310518A EP0598152A1 (de) 1992-06-17 1992-11-18 Gehäuse

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9212853A GB2257850B (en) 1991-07-13 1992-06-17 Casings
EP92310518A EP0598152A1 (de) 1992-06-17 1992-11-18 Gehäuse

Publications (1)

Publication Number Publication Date
EP0598152A1 true EP0598152A1 (de) 1994-05-25

Family

ID=26132275

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92310518A Withdrawn EP0598152A1 (de) 1991-07-13 1992-11-18 Gehäuse

Country Status (1)

Country Link
EP (1) EP0598152A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE512415C (de) * 1930-11-14 Siemens Schuckertwerke Akt Ges Aus Ober- und Unterteil bestehende Kabelmuffe
DE7110096U (de) * 1971-03-17 1971-06-16 Felten & Guilleaume Kabelwerke Ag Langsgeteilte Kabelmuffe, insbesondere fur Nachrichtenkabel
DE7601613U1 (de) * 1976-01-22 1976-05-13 Karl Pfisterer Elektrotechnische Spezialartikel, 7000 Stuttgart Abzweigmuffe
FR2335078A1 (fr) * 1975-12-08 1977-07-08 Raychem Corp Boitiers pour entourer des substrats, en particulier des epissures de cable
GB2257850A (en) * 1991-07-13 1993-01-20 B & H Ltd Casing for electrical connections.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE512415C (de) * 1930-11-14 Siemens Schuckertwerke Akt Ges Aus Ober- und Unterteil bestehende Kabelmuffe
DE7110096U (de) * 1971-03-17 1971-06-16 Felten & Guilleaume Kabelwerke Ag Langsgeteilte Kabelmuffe, insbesondere fur Nachrichtenkabel
FR2335078A1 (fr) * 1975-12-08 1977-07-08 Raychem Corp Boitiers pour entourer des substrats, en particulier des epissures de cable
DE7601613U1 (de) * 1976-01-22 1976-05-13 Karl Pfisterer Elektrotechnische Spezialartikel, 7000 Stuttgart Abzweigmuffe
GB2257850A (en) * 1991-07-13 1993-01-20 B & H Ltd Casing for electrical connections.

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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18D Application deemed to be withdrawn

Effective date: 19941126